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10
CONNECTING OF SAFETY UNITS
If the RESET switch is in position “I“, the safety unit works in the
automatic reset mode. If the Reset switch is in position `0`the
SSZ-Control unit works in manual reset mode. In this case the
Reset button connected on Terminals RR shall be pressed and
released. To avoid any manipulation of the system the acknowl-
edgment follows after release of the before pressed Reset button.
The SSZ-RZ4B will be released after pressing the Reset button.
SCHEMATIC PRESENTATION OF THE SAFETY FUNCTION BE-
TWEEN SSZ-CONTROL UNIT AND THE MACHINE CONTROL
SYSTEM.
The output contacts of the control unit, serially connected, shall
be integrated with the machine emergency switch circuit. Unless
the pressure-sensitive device is activated, the relay contacts, i.e.,
also the emergency switch circuit, are closed. When the pres-
sure-sensitive device is activated, the relay contacts of the control
unit are opening, what stops the risk posing run of the machine.
Fig. Example of connection to machine control system with the
use of an SSZ-RZ4 control unit
Additional examples for each control units shall be available in
the operating instructions of a given control unit.
Reset
options: automatic or via an external
button, closing the R-R circuit
Sensor
terminals 3, 5, 4 and 6
Colours of cables
3 = green
5 = yellow
4 = brown
6 = white
Colours in case of
safety mats with
connector
3 = blue
5 = black
4 = brown
6 = white
Safety circuit
9-10 and 11-12
The safety of machine and proper
functionality of the safety pressure devices
depends on the correct installation of mutual
connections.
SSZ-Sensor
K1
K2
Safe
release
A
Safe
release
B
9 10 11 12 31 32
R R
13 14
Reset
Exit
SSZ-RZ4
SSZ-RZ4B